Improvement in seams for leather-work



G KENISTONQ Seams for Leather Work No. 142,026. PatentedAugust19,1873.

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CHARLES KENISTON, OF SOMERVILLE, ASSIGNOR TO HIMSELF AND WILLIAM BUTTERFIELD, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN SEAMS FOR LEATHER-WORK.

Specification forming part of Letters Patent No. 142,026, dated August 19, 1873 application filed June 26, 1873.

To all whom it may concern:

Be it known that I, CHARLES KENISTON, of Somerville, in the county of Middlesex and State of Massachusetts, have invented an Improved Seam for Leather-Work; and I do hereby declare that the following, taken in connection with the drawings which accom-' pany and form part of this specification, is a description of my invention sufficient to enable those skilled in the art to practice it.

The invention relates to a new method of uniting parts of' leather-work, and particularly the outer and inner soles and uppers of boots and shoes. In my invention I use a staple of peculiar form, and which, by blows upon its head or how part, is not only driven into the leather, but automatically opens or spreads as it enters. long, and with parallel shanks placed quite near together, and point each shank so that the extreme points are on line with the outer surfaces of the. shanks, which formation insures the entrance of the staple without cripplin g and the spread of the points as they pass into and through the work, so that when they tional elevation the outer and inner soles and upper of a shoe united by such staples.

For this purpose I make thestaple' a denotes the outer sole; 1), the upper; and c, the inner sole of the shoe. (1 d denote the staples. In driving the staples each is presented to the surface of the outer sole at substantially a right angle to the surface thereof at the point where the staple is to enter, and 7 being then driven either by pressure or by a sharp percussive blow, or by a repetition of blows, it will enter the stock, and its two shanks will diverge as they enter, assuming the posi-.

tions shown in Fig. 2, by which positions the heads of the staples form one element for the integrity of thefastening and the divergent and curved shanks another, the staples being preferably so spaced in driving that the points of adjacent shanks pass by each other, as shown in the drawing.

Common nails, corrugated wire, and all such metal fastenings are imperfect in that they loosen by wear and move in their sockets in the work; but in my invention the heads and curved shanks hold the fastenings firmly in position as long as the soles endure.

The staples are inexpensive, may be readily formed and driven in accordance with my invention, and for many classes of work are by far the best fastenings now known.

I claim--- Leather-work the parts of which are united by metal fastenings, formed and inserted substantially as shown and described.

'OHARS. KENISTON; lVitnesses:

FRANCIS GOULD, M. W. FROTHINGHAM. 

